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10 March 2020Efficient single-photon sources at telecom wavelength with fiber-optic interface (Conference Presentation)
Bright fiber-coupled single photon sources are essential components for practical quantum network. In this work, we present a bright single photon source based on an InAs/InP quantum dot emitting at telecom wavelengths. We designed a nanobeam with a photonic crystal mirror at the other end and a tapered coupler at the other end enabling both directional emission and gaussian-like far-field profile. We detected fiber-coupled single photon count rate of 1.1 MHz with 40 MHz pumping rate. Considering losses from optics and spectral filters, we achieved collection efficiency into first lens of 68% and a total fiber collection efficiency of 8.2%.
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Chang-Min Lee, Mustafa Atabey Buyukkaya, Shahriar Aghaeimeibodi, Christopher J. K. Richardson, Edo Waks, "Efficient single-photon sources at telecom wavelength with fiber-optic interface (Conference Presentation)," Proc. SPIE 11291, Quantum Dots, Nanostructures, and Quantum Materials: Growth, Characterization, and Modeling XVII, 1129103 (10 March 2020); https://doi.org/10.1117/12.2545192